The docs say it can be set for direct texture lookups, but even that
causes problems.
This fixes the wireframe bug:
https://bugs.freedesktop.org/show_bug.cgi?id=32688
NOTE: This is a candidate for the 7.9 and 7.10 branches.
(1, -_, ...) was converted to (-1, ...) because of the negation
in the second component.
Masking out the unused bits fixes this.
Piglit:
- glsl-fs-texture2d-branching
NOTE: This is a candidate for the 7.9 and 7.10 branches.
This gets one more piece of the pipeline onto the new codegen backend.
Once ARB_fragment_program can generate GLSL programs, we can nuke the
old backend.
This is like how we track FragmentProgram._Current for the computed
ARB fragment program for fixed function texenv, but this gives direct
access to the gl_shader_program for drivers to codegen from, skipping
ARB_fp.
This is a step towards providing a direct route for drivers accepting
GLSL IR for codegen. Perhaps more importantly, it runs the fixed
function fragment program through the GLSL IR optimization. Having
seen how easy it is to make ugly fixed function texenv code that can
do unnecessary work, this may improve real applicatinos.
It would be nice if we handled optimized uniform math like this in
some generic way, since people often end up doing uniform expressions
in shaders, but for now keep this hard-coded like it was in the
texenvprogram code.
For fixed function fragment processing in GLSL IR, we want to be able
to reference this state value. gl_* not explicitly permitted is
reserved, so using this variable name internally shouldn't be any
issue.
This is used in the upcoming fixed function shader_program generation,
and shader_program and ARB programs are together in this code until
both fragment and vertex ff get converted.
The drivers have been changed so that they behave as if all of the flags
were set. This is already implicit in most hardware drivers and required
for multiple contexts.
Some state trackers were also abusing the PIPE_FLUSH_RENDER_CACHE flag
to decide whether flush_frontbuffer should be called.
New flag ST_FLUSH_FRONT has been added to st_api.h as a replacement.
Since we're compiling/linking GLSL shaders we should check against
the shader uniform limits, not the legacy vertex/fragment program
parameter limits which are usually lower.
The gl_program_constants struct is for limits that are applicable to
any/all shader stages. Move the geometry shader-only fields into the
gl_constants struct.
Remove redundant MaxGeometryUniformComponents field too.
Need to flush rendering (or at least indicate that the rug might be getting
pulled out from underneath us) when a shader, buffer object or query object
is about to be deleted.
Also, this helps to tell the VBO module to unmap its current vertex buffer.
Benefits:
- spares us a relocation.
- needed for zone rendering (if that ever happens).
- just awesome.
v2: Rename the debug option. Completely disabling the blitter is
required for Y tiling to work, so this option will cover other
code paths in the future.
v3: Implement suggestions by Jakob Bornecrantz.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Carl-Philip Hänsch
Henri Verbeet
Marek Olšák
Adam Jackson
Vinson Lee
Eric Anholt
Brian Paul
José Fonseca
Nicolas Peninguy
Thomas Hellstrom
Daniel Vetter